horizontal rod tube grommets?

are you talking about the fitting that goes on the end of the pvc where the opening is?

I saw someone use computer desk grommets before.

 

head on over to lowes and in the electrical section they have a section that stocks lamp switches, toggle switches, misc. electric crap and HOLE GROMMETS ;D have them in different diameters too and look like this
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The only thing that worries me about something like that is you're going to have a small hard "lip" inside that might snag the guides on your rod every time you pull it out. Make sure that you grind/sand/file it down some...

 

like so?

http://www.marineeast.com/a_sch/sch_det.asp?cid=06&pid=06_08

 

those are really nice... but... 30 bucks a piece is quite a bit for my broke a$$. i will go with the desk grommets for 2.50 a piece and grind down the insides.

 

http://www.marineeast.com/a_sch/sch_det.asp?cid=14&pid=14_17

I found these on the same website and they look like they would work just as well. The dimensions and illustrations link above them says they have a 2 in. inside diameter.

 

those look like they would work good. Now I just have to find some 2 inch tubing that will bend in the front of my hull

 

I haven't tried it yet but I plan on using sched. 40 pvc and a heat gun to shape it since I don't need a real aggressive curve. I'll be doing it in the next couple of days so I'll let you know how it works.